Keyboard case with extension



FIG. 1 is a front perspective view of a first embodiment thereof.

FIG. 2 is a rear perspective view thereof.

FIG. 3 is a front elevational view thereof.

FIG. 4 is a rear elevational view thereof.

FIG. 5 is a top plan view thereof.

FIG. 6 is a bottom plan view thereof.

FIG. 7 is a right side elevational view thereof; and,

FIG. 8 is a left side elevational view thereof.

The features shown in broken lines in the drawing figures depict features that form no part of the claimed design. 

CLAIM The ornamental design for a keyboard case with extension, as shown and described. 